Package java.util

Interface Summary
Deque<E> A linear collection that supports element insertion and removal at both ends.
NavigableMap<K,V> A SortedMap extended with navigation methods returning the closest matches for given search targets.
NavigableSet<E> A SortedSet extended with navigation methods reporting closest matches for given search targets.
Queue<E> A collection designed for holding elements prior to processing.
 

Class Summary
AbstractQueue<E> This class provides skeletal implementations of some Queue operations.
ArrayDeque<E> Resizable-array implementation of the Deque interface.
PriorityQueue<E> An unbounded priority queue based on a priority heap.